Question

How many radial nodes are there in a $2\mathrm{s}$ orbital ?

Answer 1

Radial nodes: It is the spherical surface where the probability of finding an electron is zero.

1. To solve the number of radial nodes, the following simple equation can be used. Radial Nodes $=\mathrm{n}-\mathrm{l}-1$,where $\mathrm{n}$ represents a principal quantum number, $\mathrm{l}$ represents an azimuthal quantum number.

$=\mathrm{n}-\mathrm{l}-1$

$=2-0-1$

$=1$

Therefore, the number of radial nodes in $\mathbf{2}\mathbf{s}$ the orbital is $\mathbf{1}\mathbf{.}$